Chris Amico wrote: [...] > Awesome. That worked. Thanks all. > > > Class Item(models.Model): > > > name = models.CharField(max_length=100) > > > price = models.DecimalField(max_digits=9, decimal_places=2) > > > quantity = models.IntegerField(default=1) > > > total_cost = models.DecimalField(max_digits=12, > > > decimal_places=2, > > > blank=True, > > > null=True, > > > editable=False) > > > > > def calc_total(self): > > > amount = (self.price * self.quantity) > > > return amount > > > > > def save(self): > > > self.total_cost = self.calc_total() > > > super(Item, self).save()
I am very happy to hear that everything's working now. I am a bit confused though: why not just dropping the total_cost field from the table? You can retrieve that value on the fly in your views, no need to have it "hardcoded" in your db. (It's a simple multiplication, I guess you won't have performance issue for this change.) I'd appreciate if anyone can shed some light on this and point out any drawbacks I can't see. All the best, Fabio. -- Fabio Natali --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
